... ISO9001 2) 17 pales,2.75m length 3) W or D section,RSJ post 4) hot dipped galvanized..,PVC ... head styles, both in the traditional 'D' pale profile, and 'W' section pale for added security. Palisade ... corrugated palisades, two rail connecting plates, two M/12 cup square bolts with permacone nuts for fixing ... posts via the connecting plates and thirty four M/8 saddle or tee head bolts with permacone ...